CN210040408U - Hydrogen circulation system of fuel cell power system - Google Patents
Hydrogen circulation system of fuel cell power system Download PDFInfo
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- CN210040408U CN210040408U CN201921132716.1U CN201921132716U CN210040408U CN 210040408 U CN210040408 U CN 210040408U CN 201921132716 U CN201921132716 U CN 201921132716U CN 210040408 U CN210040408 U CN 210040408U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The utility model discloses a hydrogen circulation system of a fuel cell power system, which comprises a first stop valve, a proportion regulating valve, an ejector, a galvanic pile air inlet module, a galvanic pile assembly, a galvanic pile air outlet module, a second stop valve, a purging valve and a pressure release valve, wherein hydrogen which is not completely reacted in the galvanic pile assembly is divided into two paths, and one path of hydrogen directly returns to a drainage port of the ejector through the galvanic pile air outlet module and the second stop valve and then enters the galvanic pile assembly for reaction; when the fuel cell power system is in a high-power running state, the controller controls the second stop valve to be opened, and hydrogen directly flows back to the ejector through the second stop valve and enters the electric pile assembly for reaction; when the fuel cell system is in a low-power operation state, the controller controls the second stop valve to be closed, and hydrogen is blown and discharged through the blow-down valve.
Description
The technical field is as follows:
the utility model relates to a fuel cell power system's hydrogen circulation system.
Background art:
with the continuous increase of national economy and the continuous improvement of living standard of people, automobiles become essential tools for people to go out, the reserved quantity of traditional fuel oil automobiles is continuously increased, and the air pollution is more and more serious. In order to control the increasingly serious environmental pollution, the prohibition-selling schedule of the traditional fuel automobile is released in various countries of the world. The new energy automobile is paid unprecedented attention, and the hydrogen fuel cell automobile is one kind of new energy automobile and has the advantages of cleanness, environmental protection, high energy efficiency, stable operation, low noise and the like. In recent years, with continuous research on the field of hydrogen fuel cells by governments and research and development institutions of various countries, the technology is continuously improved, and at present, hydrogen fuel cell automobiles gradually enter the lives of people.
The hydrogen fuel cell power system converts chemical energy into electric energy through the catalytic oxidation reaction of hydrogen and oxygen, and generates water without any pollution, and is an ultimate solution for the emission pollution of automobiles. Fuel cell power systems typically operate to provide sufficient hydrogen to react with oxygen in the stack, but some unreacted hydrogen is vented from the stack. The hydrogen circulation system is a key component in the fuel cell power system because the hydrogen circulation system re-feeds the unreacted hydrogen into the electric pile for reuse, and the utilization rate of the hydrogen is improved.
The utilization of hydrogen directly affects the operating efficiency of the overall fuel cell power system and the overall system economics. Hydrogen is used as a combustible gas, and if the solubility of hydrogen in tail gas discharged by a fuel cell power system is too high, the hydrogen can harm the life health of people and can cause explosion. Therefore, the safety, the economical efficiency and the reliability of the whole hydrogen fuel cell power system are directly influenced by the design quality of the hydrogen circulating system. Referring to fig. 1, the conventional fuel cell has a structure using a hydrogen circulation pump, and the hydrogen circulation pump is operated regardless of the high-power and low-power operation states, thereby increasing additional power consumption of the system. And the volume of the hydrogen circulating pump is larger in proportion to the whole fuel cell power system, so that the hydrogen circulating pump occupies a large space and increases the weight of the whole power system.
In summary, most hydrogen circulation systems in the current fuel cell power systems have hydrogen circulation pumps, which are operated in high-power and low-power working states, so that the power consumption of the whole system is increased, and the hydrogen circulation systems have large volume and mass, so that the volume and weight of the whole system are increased. Therefore, a more reasonable hydrogen circulation system needs to be designed, the problems are solved, the efficiency of the whole system is improved, and the whole power system has higher integration level, smaller volume, lighter weight and lower cost.
The invention content is as follows:
the utility model aims at providing a fuel cell driving system's hydrogen circulation system solves among the prior art hydrogen circulation system most and all has the hydrogen circulating pump, no matter all is operating under high power and low power's operating condition, increases entire system's consumption to hydrogen circulation system is bulky, and the quality is big, has increased entire system's volume and the technical problem of weight.
The purpose of the utility model is realized by the following technical scheme:
a hydrogen circulation system for a fuel cell power system, characterized by: the high-pressure hydrogen enters an inlet of the ejector after passing through the first stop valve and the proportion regulating valve, and the hydrogen sprayed out from a spray port of the ejector enters the electric pile assembly for reaction after passing through the electric pile air inlet module; the incompletely reacted hydrogen in the electric pile assembly is divided into two paths, wherein one path of the incompletely reacted hydrogen directly returns to a drainage port of the ejector through the electric pile gas outlet module and the second stop valve and then enters the electric pile assembly for reaction; the other path of incompletely reacted hydrogen is blown and discharged after passing through the electric pile assembly, the electric pile gas outlet module and the blowing valve; the pile air inlet module is connected with a pressure release valve, and the hydrogen discharged from the ejector is discharged through the pressure release valve when the pressure is overlarge; the fuel cell power system is controlled by a fuel cell system controller, when the fuel cell power system is in a high-power running state, the fuel cell system controller controls the second stop valve to be opened, and hydrogen which is not completely reacted in the electric pile assembly directly flows back to the drainage port of the ejector through the second stop valve and enters the electric pile assembly for reaction; when the fuel cell system is in a low-power operation state, the fuel cell system controller controls the second stop valve to close, and incompletely reacted hydrogen in the stack assembly is purged and discharged through the purge valve.
And the hydrogen discharged by the pressure release valve is converged with the hydrogen discharged by the purge valve and then diluted by the hydrogen diluting device.
The hydrogen diluted by the hydrogen diluting device is discharged from the tail discharge port, the hydrogen concentration sensor is installed in front of the tail discharge port, the hydrogen concentration at the tail end of the tail discharge port is monitored, and the discharged hydrogen is directly discharged after being diluted to safe concentration by the hydrogen diluting device.
The pressure relief valve is integrated on the electric pile air inlet module.
The high-pressure hydrogen gas is discharged from the hydrogen cylinder.
The above-mentioned high-power operation state of the fuel cell power system means that the output power is greater than or equal to a certain threshold, and the low-power operation state of the fuel cell power system means that the output power is less than a certain threshold.
The certain threshold is in the range of 40% -80% of the rated power of the fuel cell power system.
The hydrogen concentration sensor sends a detected signal to the fuel cell system controller for processing, the fuel cell system controller controls the opening and closing of the hydrogen diluting device, and when the fuel cell power system is in a running state, the fuel cell system controller controls the opening of the hydrogen diluting device to dilute a small amount of hydrogen in the tail discharge pipe to a safe concentration; when the fuel cell power system is in a shutdown or standby state, the fuel cell system controller controls the hydrogen dilution device to be closed.
The first stop valve, the second stop valve, the proportion regulating valve, the pressure release valve, the purge valve and the hydrogen diluting device are controlled to be opened and closed by the fuel cell system controller; set up first pressure sensor between proportional control valve and ejector entry, set up second pressure sensor between the hydrogen entry of galvanic pile air inlet module and galvanic pile assembly, set up third pressure sensor between the hydrogen export of galvanic pile assembly and galvanic pile air outlet module, first pressure sensor, second pressure sensor and third pressure sensor's detected signal send to fuel cell system controller, first pressure sensor monitors the hydrogen pressure of coming out through proportional control valve, second pressure sensor and third pressure sensor monitor the pressure of galvanic pile assembly hydrogen entry and hydrogen export respectively.
The fuel cell system controller controls the pressure relief valve to open when the second pressure sensor monitors that the pressure of the hydrogen discharged from the ejector is over a set maximum value, the high-pressure hydrogen is discharged into the tail discharge pipe through the pressure relief valve, and the hydrogen is diluted to a safe concentration through the hydrogen diluting device and is discharged into the air through the tail discharge port; when the second pressure sensor monitors that the pressure of the hydrogen discharged from the ejector is normal, the fuel cell system controller controls the pressure release valve to close.
The hydrogen concentration sensor is arranged at the tail end of the whole hydrogen circulation system, monitors the hydrogen concentration at the tail end of the whole tail row and sends a detection signal to the fuel cell system controller, and if the hydrogen concentration in the tail row exceeds the safe discharge standard, the fuel cell system controller sends out a warning.
Compared with the prior art, the utility model, following effect has:
1) the utility model discloses a cancellation hydrogen circulating pump directly utilizes the principle of ejector decompression acceleration rate, and the hydrogen that does not react in the pile assembly sprays into the pile again and reacts. And the fuel cell system controller controls the whole hydrogen circulation system to open and close the second stop valve under the running states of different powers so as to control the hydrogen return state of the whole system. Therefore, the utilization rate of the hydrogen of the whole system is improved; extra power consumption of the system is reduced, and the reliability of the system is improved; the whole power system has higher integration level, smaller volume, lighter weight and lower cost.
2) Other advantages of the present invention will be described in detail in the examples section.
Description of the drawings:
fig. 1 is a block diagram showing a structure of a fuel cell using a hydrogen circulation pump in the related art;
FIG. 2 is a schematic block diagram of a hydrogen gas circulation system of the fuel cell power system of the present invention;
fig. 3 is a perspective view of the ejector of the present invention;
fig. 4 is a front view of the ejector of the present invention;
FIG. 5 is a sectional view A-A of FIG. 4;
fig. 6 is a block diagram of the circuit of the present invention.
The specific embodiment is as follows:
reference numbers in the figures: the device comprises a hydrogen cylinder 1, a stop valve 2, a proportional control valve 3, an ejector 4, a galvanic pile air inlet module 5, a galvanic pile assembly 6, a galvanic pile air outlet module 7, a stop valve 8, a purge valve 9, a pressure release valve 10, a hydrogen diluting device 11, a tail outlet 12, a pressure sensor 13, a pressure sensor 14, a pressure sensor 15, a hydrogen concentration sensor 16, a high-pressure hydrogen inlet 41, a jet orifice 42, a drainage orifice 43, a nozzle 44, a receiving chamber 45, a mixing chamber 46 and a diffusion chamber 47.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the following detailed description of preferred embodiments and accompanying drawings.
The first embodiment is as follows:
as shown in fig. 2, fig. 3, fig. 4, fig. 5, and fig. 6, the utility model provides a hydrogen circulation system of fuel cell power system, including first stop valve 2, proportional control valve 3, ejector 4, galvanic pile admit air module 5, galvanic pile assembly 6, galvanic pile air outlet module 7, second stop valve 8, purge valve 9 and relief valve 10, high-pressure hydrogen enters into inlet 41 of ejector 4 after first stop valve 2 and proportional control valve 3, the hydrogen of jet 42 spun of ejector 4 enters into galvanic pile assembly 6 after the galvanic pile admits air module 5 and reacts; the incompletely reacted hydrogen in the electric pile assembly 6 is divided into two paths, wherein one path of the incompletely reacted hydrogen directly returns to the drainage port 43 of the ejector 4 through the electric pile gas outlet module 7 and the second stop valve 8 and then enters the electric pile assembly 6 for reaction; the other path of incompletely reacted hydrogen is blown and exhausted after passing through a galvanic pile assembly 6, a galvanic pile gas outlet module 7 and a blowing valve 9; the entire hydrogen circulation system is controlled by the fuel cell system controller 17; the fuel cell stack air inlet module 5 is connected with a pressure relief valve 10, and hydrogen discharged from a jet orifice 42 of the ejector 4 is discharged through the pressure relief valve 10 when the pressure is overlarge; the fuel cell power system is controlled by a fuel cell system controller 17, when the fuel cell power system is in a high-power running state, the fuel cell system controller 17 controls the second stop valve 8 to be opened, hydrogen which is not completely reacted in the electric pile assembly 6 directly flows back to the drainage port 43 of the ejector 4 through the second stop valve 8, and enters the electric pile assembly 6 for reaction; when the fuel cell system is in a low-power operation state, the fuel cell system controller 17 controls the second stop valve 8 to close, and incompletely reacted hydrogen in the stack assembly 6 is purged and discharged through the purge valve 9. It uses ejector 4 and the combination of second stop valve 8, improves entire system's efficiency, makes whole driving system integrated level higher, and the volume is littleer, and the quality is lighter, and the cost is lower, and the reduction system is extra consumption, improves the reliability of system.
The high power operation state is assumed to be a state where the output power of the fuel cell power system is equal to or greater than 40% of the rated power, and the low power operation state is assumed to be a state where the output power of the fuel cell power system is less than 40% of the rated power.
The hydrogen discharged by the pressure release valve 10 and the hydrogen discharged by the purge valve 9 are converged and then diluted by the hydrogen diluting device 11, and the hydrogen dilution device is simple in structure and reasonable in layout.
The hydrogen diluted by the hydrogen diluting device 11 is discharged from the tail discharge port 12, the hydrogen concentration sensor 16 is installed in front of the tail discharge port 12 to monitor the hydrogen concentration at the tail end of the tail discharge, and the discharged hydrogen is directly discharged after being diluted to a safe concentration by the hydrogen diluting device 11, so that the safety is improved.
The pressure release valve 10 is integrated on the electric pile air inlet module 5, and is high in integration level, small in size and convenient to form modularization.
The high-pressure hydrogen gas comes out of the hydrogen cylinder 1.
The high-power operation state of the fuel cell power system refers to that the output power is larger than or equal to a certain threshold value, and the low-power operation state of the fuel cell power system refers to that the output power is smaller than a certain threshold value, wherein the certain threshold value is in a range of 40% -80% of rated power of the fuel cell power system.
The hydrogen concentration sensor 16 sends the detected signal to the fuel cell system controller 17 for processing, the fuel cell system controller 17 controls the hydrogen diluting device 16 to be opened and closed, when the fuel cell power system is in a running state, the fuel cell system controller 17 controls the hydrogen diluting device 16 to be opened, and a small amount of hydrogen in the tail exhaust pipe is diluted to a safe concentration; when the fuel cell power system is in a shutdown or standby state, the fuel cell system controller 17 controls the hydrogen diluting device 16 to be closed, so that the automation degree is high, and the control is simple and convenient.
A first pressure sensor 13 is arranged between the proportional control valve 3 and the inlet of the ejector 4, a second pressure sensor 14 is arranged between the stack inlet module 5 and the hydrogen inlet of the stack assembly 6, a third pressure sensor 15 is arranged between the hydrogen outlet of the stack assembly 6 and the stack outlet module 7, and detection signals of the first pressure sensor 13, the second pressure sensor 14 and the third pressure sensor 15 are sent to a fuel cell system controller 17. A plurality of pressure sensors are arranged in the whole hydrogen circulation system, the first pressure sensor 13 monitors the pressure of hydrogen coming out of the proportional control valve 3, and the second pressure sensor 14 and the third pressure sensor 15 monitor the pressure of a hydrogen inlet and a hydrogen outlet of the galvanic pile assembly 6 respectively, so that various controls can be conveniently made.
The high-pressure hydrogen in the hydrogen cylinder 1 passes through the stop valve 2 and then is regulated by the proportion regulating valve 3, enters the high-pressure hydrogen inlet 41 of the ejector 4, is sprayed into the receiving chamber 45 from the nozzle 44 of the ejector 4, and the unreacted low-pressure hydrogen which enters the galvanic pile of the receiving chamber 45 together is sprayed into the mixing chamber 46 and the diffusion chamber 47 to form high-pressure mixed gas, and the high-pressure mixed gas is sprayed out from the spray opening 42 and enters the galvanic pile assembly 6 through the galvanic pile air inlet module 5 to react with oxygen to generate electric energy.
Unreacted hydrogen in the electric pile assembly 6 comes out through the electric pile air outlet module 7, can return to the drainage port 43 of the ejector 4 through the stop valve 8, enters the gas receiving chamber 45, is blown into the mixing chamber 46 and the diffusion chamber 47 by high-pressure hydrogen sprayed by the nozzle 44 of the ejector 4, and enters the electric pile assembly 6 again through the electric pile air inlet module 5. In addition, unreacted hydrogen in the stack assembly 6 is discharged through the stack gas outlet module 7, and also can be blown into a tail discharge pipe through the blowing valve 9, and is diluted to a safe concentration through the hydrogen diluting device 11, and is discharged into the air from a tail discharge port 12.
The fuel cell system controller 17 controls the pressure release valve 10 to open when the pressure sensor 14 monitors that the pressure of the hydrogen inlet of the fuel cell stack assembly 6 is higher than a set maximum value, high-pressure hydrogen is discharged to a tail discharge pipe through the pressure release valve 10, the hydrogen is diluted to a safe concentration through the hydrogen diluting device 11, and the hydrogen is discharged to the air from a tail discharge port 12, so that the control is automatic.
The hydrogen concentration sensor 16 is arranged behind the hydrogen diluting device 11, monitors the hydrogen concentration at the tail end of the whole tail exhaust, and improves the safety.
The first stop valve 2, the second stop valve 8, the proportional control valve 3, the pressure release valve 9, the purge valve 10 and the hydrogen dilution device 11 are controlled by the fuel cell system controller 17 to be opened and closed; the fuel cell system controller 17 controls the pressure release valve 10 to open when the second pressure sensor 14 monitors that the pressure of the hydrogen from the ejector 4 is over a set maximum value, the high-pressure hydrogen is discharged to the tail discharge pipe through the pressure release valve 10, diluted to a safe concentration through the hydrogen diluting device 11, and discharged to the air through the tail discharge port 12; when the second pressure sensor 14 monitors that the pressure of the hydrogen discharged from the ejector 4 is normal, the fuel cell system controller controls the pressure release valve 10 to be closed, so that the safety of the system is effectively improved.
The hydrogen concentration sensor 16 is arranged at the tail end of the whole hydrogen circulation system, monitors the hydrogen concentration at the tail end of the whole hydrogen circulation system and sends a detection signal to the fuel cell system controller 17, and if the hydrogen concentration at the tail end exceeds the safe discharge standard, the fuel cell system controller 17 sends out a warning to prompt intuition.
The whole hydrogen circulation system is controlled by a fuel cell system controller 17, the fuel cell system controller 17 controls the opening and closing of the second stop valve 8, when the fuel cell power system is in a high-power operation state, the hydrogen supply is sufficient, the flow rate is large, and the amount of hydrogen which is not completely reacted in the electric pile assembly 6 is large. At this time, the fuel cell system controller 17 controls the second stop valve 8 to open, unreacted hydrogen in the stack assembly 6 comes out from the stack gas outlet module 7, enters the ejector 4 through the second stop valve 8, and returns to the stack assembly 6 through the stack gas inlet module 5 to react again. Therefore, the utilization rate of hydrogen in the power system can be effectively improved.
When the fuel cell system is in a low-power operation state, the hydrogen supply is low, the flow rate is small, and the hydrogen which is not completely reacted in the stack assembly 6 is less. At this time, the fuel cell system controller 17 controls the second stop valve 8 to close, a small amount of unreacted hydrogen in the stack assembly 6 is directly purged from the stack gas outlet module 7 through the purge valve 9, and then the hydrogen is diluted to a safe concentration through the hydrogen diluting device 11 and is discharged to the air through the 12 tail discharge port, so that the safety is improved.
The hydrogen diluting device 11 is arranged at the tail end of the tail exhaust pipe to dilute the hydrogen discharged from the tail exhaust pipe, the fuel cell system controller controls the hydrogen diluting device 11 to be opened and closed, when the fuel cell power system is in a running state, a small amount of hydrogen is discharged, and the fuel cell system controller controls the hydrogen diluting device 11 to be opened; when the fuel cell power system is in a shutdown or standby state, where no hydrogen is being discharged, the fuel cell system controller controls the shut down of the hydrogen dilution device 11. Therefore, extra power consumption is reduced, and energy is saved.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement modes, and are all included in the scope of the present invention.
Claims (11)
1. A hydrogen circulation system for a fuel cell power system, characterized by: the high-pressure hydrogen enters an inlet of the ejector after passing through the first stop valve and the proportion regulating valve, and the hydrogen sprayed out from a spray port of the ejector enters the electric pile assembly for reaction after passing through the electric pile air inlet module;
the incompletely reacted hydrogen in the electric pile assembly is divided into two paths, wherein one path of the incompletely reacted hydrogen directly returns to a drainage port of the ejector through the electric pile gas outlet module and the second stop valve and then enters the electric pile assembly for reaction; the other path of incompletely reacted hydrogen is blown and discharged after passing through the electric pile assembly, the electric pile gas outlet module and the blowing valve;
the pile air inlet module is connected with a pressure release valve, and the hydrogen discharged from the ejector is discharged through the pressure release valve when the pressure is overlarge;
the fuel cell power system is controlled by a fuel cell system controller, when the fuel cell power system is in a high-power running state, the fuel cell system controller controls the second stop valve to be opened, and hydrogen which is not completely reacted in the electric pile assembly directly flows back to the drainage port of the ejector through the second stop valve and enters the electric pile assembly for reaction; when the fuel cell system is in a low-power operation state, the fuel cell system controller controls the second stop valve to close, and incompletely reacted hydrogen in the stack assembly is purged and discharged through the purge valve.
2. A hydrogen circulation system for a fuel cell power system according to claim 1, wherein: and the hydrogen discharged by the pressure release valve and the hydrogen discharged by the purge valve are converged and then diluted by the hydrogen diluting device.
3. A hydrogen circulation system of a fuel cell power system according to claim 2, wherein: the hydrogen diluted by the hydrogen diluting device is discharged from the tail discharge port, a hydrogen concentration sensor is installed in front of the tail discharge port, the hydrogen concentration at the tail end of the tail discharge port is monitored, and the discharged hydrogen is directly discharged after being diluted to safe concentration by the hydrogen diluting device.
4. A hydrogen circulation system of a fuel cell power system according to claim 1, 2 or 3, wherein: the pressure relief valve is integrated on the electric pile air inlet module.
5. A hydrogen circulation system for a fuel cell power system according to claim 4, wherein: high-pressure hydrogen gas comes out of the hydrogen cylinder.
6. A hydrogen circulation system for a fuel cell power system according to claim 3, wherein: the high-power operation state of the fuel cell power system means that the output power is larger than or equal to a certain threshold value, and the low-power operation state of the fuel cell power system means that the output power is smaller than a certain threshold value.
7. A hydrogen circulation system for a fuel cell power system according to claim 6, wherein: the certain threshold is in the range of 40% -80% of the rated power of the fuel cell power system.
8. A hydrogen circulation system for a fuel cell power system according to claim 3, wherein: the hydrogen concentration sensor sends a detected signal to the fuel cell system controller for processing, the fuel cell system controller controls the opening and closing of the hydrogen diluting device, and when the fuel cell power system is in a running state, the fuel cell system controller controls the opening of the hydrogen diluting device to dilute a small amount of hydrogen in the tail discharge pipe to a safe concentration; when the fuel cell power system is in a shutdown or standby state, the fuel cell system controller controls the hydrogen dilution device to be closed.
9. A hydrogen circulation system for a fuel cell power system according to claim 3, wherein: the first stop valve, the second stop valve, the proportion regulating valve, the pressure release valve, the purge valve and the hydrogen diluting device are controlled to be opened and closed by the fuel cell system controller; set up first pressure sensor between proportional control valve and ejector entry, set up second pressure sensor between the hydrogen entry of galvanic pile air inlet module and galvanic pile assembly, set up third pressure sensor between the hydrogen export of galvanic pile assembly and galvanic pile air outlet module, first pressure sensor, second pressure sensor and third pressure sensor's detected signal send to fuel cell system controller, first pressure sensor monitors the hydrogen pressure of coming out through proportional control valve, second pressure sensor and third pressure sensor monitor the pressure of galvanic pile assembly hydrogen entry and hydrogen export respectively.
10. A hydrogen circulation system for a fuel cell power system according to claim 9, wherein: the fuel cell system controller controls the pressure relief valve to open when the second pressure sensor monitors that the pressure of the hydrogen discharged from the ejector is over a set maximum value, the high-pressure hydrogen is discharged into the tail discharge pipe through the pressure relief valve, and the hydrogen is diluted to a safe concentration through the hydrogen diluting device and is discharged into the air through the tail discharge port; when the second pressure sensor monitors that the pressure of the hydrogen discharged from the ejector is normal, the fuel cell system controller controls the pressure release valve to close.
11. A hydrogen circulation system for a fuel cell power system according to claim 9, wherein: the hydrogen concentration sensor is arranged at the tail end of the whole hydrogen circulation system, monitors the hydrogen concentration at the tail end of the whole tail row and sends a detection signal to the fuel cell system controller, and if the hydrogen concentration in the tail row exceeds the safe discharge standard, the fuel cell system controller sends out a warning.
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| CN201921132716.1U CN210040408U (en) | 2019-07-18 | 2019-07-18 | Hydrogen circulation system of fuel cell power system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247080A (en) * | 2019-07-18 | 2019-09-17 | 中山大洋电机股份有限公司 | A kind of hydrogen gas circulating system of fuel cell power system |
| CN113394433A (en) * | 2021-08-18 | 2021-09-14 | 北京亿华通科技股份有限公司 | Method and device for estimating hydrogen concentration of fuel cell |
| CN113594498A (en) * | 2020-04-30 | 2021-11-02 | 未势能源科技有限公司 | Fuel cell system and control method thereof |
| WO2022041544A1 (en) * | 2020-08-28 | 2022-03-03 | 广西玉柴机器股份有限公司 | Closed-type proton-exchange membrane fuel cell system housing ventilation and drainage apparatus |
| CN114725453A (en) * | 2022-03-31 | 2022-07-08 | 西安交通大学 | Gas-water separator for fuel cell, hydrogen supply system and method for regulating and controlling nitrogen concentration |
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2019
- 2019-07-18 CN CN201921132716.1U patent/CN210040408U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247080A (en) * | 2019-07-18 | 2019-09-17 | 中山大洋电机股份有限公司 | A kind of hydrogen gas circulating system of fuel cell power system |
| CN110247080B (en) * | 2019-07-18 | 2024-01-09 | 中山大洋电机股份有限公司 | Hydrogen circulation system of fuel cell power system |
| CN113594498A (en) * | 2020-04-30 | 2021-11-02 | 未势能源科技有限公司 | Fuel cell system and control method thereof |
| WO2022041544A1 (en) * | 2020-08-28 | 2022-03-03 | 广西玉柴机器股份有限公司 | Closed-type proton-exchange membrane fuel cell system housing ventilation and drainage apparatus |
| CN113394433A (en) * | 2021-08-18 | 2021-09-14 | 北京亿华通科技股份有限公司 | Method and device for estimating hydrogen concentration of fuel cell |
| CN113394433B (en) * | 2021-08-18 | 2021-11-05 | 北京亿华通科技股份有限公司 | Method and device for estimating hydrogen concentration of fuel cell |
| CN114725453A (en) * | 2022-03-31 | 2022-07-08 | 西安交通大学 | Gas-water separator for fuel cell, hydrogen supply system and method for regulating and controlling nitrogen concentration |
| CN114725453B (en) * | 2022-03-31 | 2024-04-30 | 西安交通大学 | Gas-water separator for fuel cell, hydrogen supply system and method for regulating and controlling nitrogen concentration |
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